On Mon, May 18, 2020 at 7:38 AM Виктор Мулин <[email protected]> wrote:
> Hello! When using the mjpeg codec to convert an image from bmp to jpg > format, a picture with one quantization table is created. I need two > standard tables described in the jpeg iso / iec 10918-1 T.81 standard in > Appendix K.1 and K.2 to be added to the output image file. I also found > them in the ffmpeg source codes (jpegtables.c -> std_luminance_quant_tbl > and jpegtables.c -> std_chrominance_quant_tbl [url: > https://ffmpeg.org/doxygen/trunk/jpegtables_8c_source.html]. I looked > through the mailing list archive and found old solutions ( > https://ffmpeg.org/pipermail/libav-user/2015-July/008318.html), but now > the av_codec_set_chroma_intra_matrix () function is declared depricated. > How do I get what I want? How to set intra_matrix, chroma_intra_matrix and > inter_matrix (in the description they are almost the same)? > The intra_matrix and inter_matrix can now be set directly in the AVCodecContext structure. See https://ffmpeg.org/doxygen/trunk/structAVCodecContext.html, and search for "intra_matrix" and "inter_matrix". P.S .: Sorry, I don't speak English well. I use google translator. > Don't worry - what you wrote is clear enough. > _______________________________________________ > Libav-user mailing list > [email protected] > https://ffmpeg.org/mailman/listinfo/libav-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe".
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